The numeric keypad stopped working after upgrading from Ubuntu 8.04 to 10.04. To enable the numeric keypad goto System->Preferences->Keyboard and click on the Mouse Keys tab. Uncheck the Allow to control pointer using the keyboard and you should be back in business.

I am in the process of migrating from Subversion to Git for all of my projects and needed a way to install the latest version of Git in Ubuntu. There are many excellent resources that I have combined in this howto. I will be installing Git from Launchpad.

The first step in installing the latest version of Git is to tell apt where and how to get Git. These instructions are for Ubuntu Hardy Heron 8.04 LTS and will also work on later versions. Note that since Ubuntu 9.10 you can use the "sudo add-apt-repository" method to add the latest version of Git to Ubuntu. Create "/etc/apt/sources.list.d/git.ppa.list" and add the following lines (note that you can skip the deb-src if you do not need the Git source):

Configuring Exim to use Gmail as the outgoing SMTP server is simple. This HOWTO will walk you through installing, configuring and routing email thru Gmail for exim.

The first step is to install exim4. Launch terminal and:

Run the following command to configure exim4:

Set the following:

General type of mail configuration: mail sent by smarthost; no local mail 
System mail name: (default)

I ran into an problem with sound on a Dell Inspiron 518 workstation running Ubuntu 8.04. I had paused Amarok and then viewed a Flash video on youtube. When I went to play Amarok again Amarok stalled and hung there. I had to kill the amarok process to shut it down. The syslog gave up:

I was getting OutOfMemoryErrors when running Eclipse with multiple projects open. To solve the problem I added the following arguments to my quicklaunch:

eclipse -vmargs -Xms512m -Xmx1024m -Xss2m -XX:MaxPermSize=256m

Reference

-Xms

Specify the initial size, in bytes, of the memory allocation pool. This value must be a multiple of 1024 greater than 1MB. Append the letter k or K to indicate kilobytes, or m or M to indicate megabytes. The default value is chosen at runtime based on system configuration.

-Xmx